植物根际促生菌对蓝莓根际土壤养分与微生物数量的影响  

Effects of Plant Growth-Promoting Rhizobacteria on Soil Nutrient and Microbial Quantity in Blueberry Rhizosphere

作　　者：孙运杰[1] 马海林[2] 刘方春[2] 丁延芹[3] 邢尚军[2] 丁凤菊 

机构地区：[1]山东农业大学资源与环境学院,山东泰安271018 [2]山东省林业科学研究院/山东省森林植被生态修复工程技术研究中心,山东济南250014 [3]山东农业大学生命科学学院,山东泰安271018 [4]临清市园林管理处,山东临清252600

出　　处：《山东农业科学》2014年第1期66-69,共4页Shandong Agricultural Sciences

基　　金：国家林业公益性行业科研专项(201204402);山东省科学技术发展计划项目(2007GG2009007)

摘　　要：从蓝莓根际土壤中筛选出4种植物根际促生细菌（ PGPR） L12、L13、L14和L15。通过蓝莓盆栽试验，研究了这4株PGPR对蓝莓根际土壤养分与微生物数量的影响。结果表明，在蓝莓的一个生长周期内， L13和L14能够显著增加蓝莓根际土壤中的可培养微生物数量，而接种L12和L15降低了蓝莓根际土壤中可培养微生物的数量；接种4株PGPR均能增加土壤有机质含量。 L13对土壤速效养分具有明显的促进作用，增加幅度为5．05％～22．27％；菌株L15、L14、L13对土壤酶活性的影响较大。综合以上分析，L13能够明显改善蓝莓根际土壤的养分状况和提高根际土壤微生物数量，具有良好的应用潜力。Four plant growth -promoting rhizobacteria （ PGPR） named L12, L13, L14 and L15 were screened from blueberry rhizospheric soil .Pot experiments were conducted to evaluate the effects of different PGPR inoculation on soil nutrient and microbial quantity in blueberry rhizosphere .The results showed that , during one growth cycle , the inoculation of L13 and L14 could significantly increase the culturable microorgan-ism population in blueberry rhizosphere , whereas the population was significantly decreased by L 15 and L12 inoculation .All of the 4 PGPR could increase the soil organic matter content .L13 had significant effects on soil available nutrient , and the increasing range was 5.05%~22.27%.L15, L14 and L13 had greater effects on soil enzyme activity .Above all , L13 could improve the soil nutrient and microbial quantity in blueberry rhi-zosphere , and had broad application prospects .

关 键 词：蓝莓 植物根际促生菌 土壤养分 微生物数量 土壤酶活性 

分 类 号：S154.39[农业科学—土壤学]